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Finding the Fourth Proportional to 65,892.64, 90,890.96 and 48,647.39

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Solution

The fourth proportional to 65,892.64, 90,890.96 and 48,647.39 is: 67,103.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,892.64 : 90,890.96 = 48,647.39 : x
  2. Step 2: Convert to fraction form
    65,892.64/90,890.96 = 48,647.39/x
  3. Step 3: Cross multiply
    65,892.64x = 90,890.96 × 48,647.39
  4. Step 4: Simplify right side
    65,892.64x = 4,421,607,554.54
  5. Step 5: Solve for x
    x = 4,421,607,554.54/65,892.64
  6. Step 6: Final answer
    x = 67,103.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.